There is a silver Pontiac like that up on blocks in someone's front yard not far from my parent's house ... maybe 15 minutes drive away. It has been there for several years and will probably never see the road again.
Anyway .... we can all see his secret to his low track times:
The head is turned round like BTCC. The cam cover is similar to the ones used on the C20XE Formula 3 engines.
It would of cost him a lot of money either way. Engine is probably ~300hp without any Nitrous Oxide injection.
Stef
Vauxhall Astra.
T3 60trim, Intercooler, Mopar Super 60 Injectors, SDS Stand Alone EFI, Cast T3 Manifold With External Wastegate + More...